Logging truck



J. McL-ARTY.

LOGGING TRUCK.

APPLICATIONHLED SEPT- 3. 192:.-

Patented NOV. 28,. 1922.

4 SHEETSSHEET 1.

J. McLARTY.

LOGGING TRUCK.

APPLICATION FILED SEPT-3, 1921.

1,436,999 Patented Nov. 28, 1922.

4 3HEETSSHEET 2.

I Gwen L01 J. McLARTY.

LOGGING TRUCK.

APPLICATION FILED sEPT'. 3, 1921.

Patented Nov. 28, 1922..

Patented Nov. 28, 192 2.

4 SHEETS-SHEET 4.

z .1 mx M, W w J J. MCLARTY.

LOGGING TRUCK. APPLICATION FILED sEP'rJ3. 1921.

Patented Nov. 28, I

' 'Toallwlwmitmw concern:

. Be it known t at I, JOHN MCLARTY, a citizen of the United States,,residing at 'Klamath Falls, in the county of Klamath- 5 and State ofOregon, have invented new and 7 JOHN Mutant, or xLm'rnnLLs-oaneon,assrenoa crown-m1 ro Inns a EASSELBEEG", Q! KLAIATB FALLS, BE GON.

oeeme ration.

Application filed September 3,1621. Serial no. 498,288,.

usefulImprovements in Logging Trucks, of

which the following is a specification.

The object'of my present invention is the provision of a power truckdesigned espel. cially .for logging purposes and constructed with a viewto being'moved with facility in woods and also with a view to quicklytakin up and depositing a plurality of logs with but little labor on thepart of an attendant or attendants.

The truck is desi ned to also serve other pu i'poses as her ina ter setforth. o the attain ent of the foregoing, the invention consists in theimprovement as 1:. hereinafter described and definitely claimed.

1 In the accompanying drawings, forming part of this specification Fiure 1 is a top plan view of the truck constltuting the best practicalembodiment M of my invention that I have as yet devised.

Figure 2 is a side elevation of theimproved truck.

Figure .3 1s a rear end elevation of the truck.

B0 Figures 4 and are enlarged detail views of important combinationshereinafter explicitly referred to.

Similar numerals of reference designate corresponding parts in all ofthe views of to the drawings.

Among other elements my novel truck comprises body arches 1, preferablyof cast steel and spaced apart in parallel relation. A portion of one ofsaid arches is shown in '1 Fig. 5. The said body arches l are r0- videdat the outer sides of their "pendent portions with lateral aperturedlugs 2, and guided in the said apertured lugs are verti cal rods 3 onthe lower portions of which '21: are fixed spindles 4 by which arecarried ground wheels 5 with sprocket gears 6 at their inner sides.Certain of the lugs 2 bear against the upper ends of coiled springs 6"on the rods 3, shown in detail in Figure 4,

c with the result that the body arches 1 are yieldingl supported and areadequately cushione In this connection I would have it understood that Irefer to employ coiled s rings 6 such: as ilustrated Hi Fi ure4;

t e said spring? being interposed etween v ,6 on the and the springsbeing preferabl inipai'rs and equipped with anti riot-ion bearings 6 asshown. The wheels '5 may be plain metal- [licwheels or may be equippedwith rubber tires'in the discretion of the manufacturer-of I v thetruck. v,

Interposed between and connecting the endent ortionsof the body arches 1are ower and upper longitudinal braces? and 8, Figure 2.

and is connected in the ordinary well known manner with the workingparts of a for- Ward differential 14. Flxed on the said drive shaft 13is a spur gear 15, Figure 1,

in intermeshed relation with a spur gear 16' on a longitudinal shaft 17which-is connected by gearing 18 with the shaft 19 of a reardifferential 20- The shafts 21 .of the forward differential 14 areclutched at 22 to shafts 23, one of which is shown in Figure 5, and theshafts 24 of the rear differential .20 are clutched at 25 in similarmanner to similar shaft 23. Each of the shafts 23 is [connected throughan universal joint 26 with a shaft section 27, and the said shaftsection 27 is slidably connected at 28 to a shaft section 29; the saidshaft section 29 being telescopically arranged in the shaft section 27and being of angular form in cross section so as to be capable of movingendwise relatively to the section 27 and yet adapted, to be turned aboutits axis by the same. The several shaft sections 29- are Superimposed onand suitably fixed to connected at their outer ends through universaljoints 30 with shaft sections 31, carried in brackets 320m the verticalrods 3. At their outer ends the shaft sections 31 are provided connectedthrough the medium of sprocket belts 34, Figure 1 with the sprocketgears ound wheels 5. In virtue of the connections just described it willbe m with sprocket gears 33 which are derstood that the ground wheels 5are driven from their respective difierential; also, that bymanipulating the clutches 22 and 25 any one of the ground wheels may bedisconnected from the motor- 7 Clutched at 40 to the shaftv 17 is asupplemental shaft 41 which is connected by gearing 42 with a drum 43.Mamfestly through the medium of the clutch 40 the drum 43 ma beconnected with the motor 12 when it is desired to powerfully rotate thesaid drum 43. it will also be noticed by reference to Figure 1 that theshaft 17 is connected by gearing 50 with a shaft 51 at the rear of thetruck. The said shaft 51 is clutched at 52 to a rear longitudinal shaft53. On the shaft 53 in rear of the clutch 52 is a brake disk 54associated with a brake band 55 which maybe and preferably s manipulatedin the manner common to brake: bands. As best shown in Figures 1 and 3the shaft 53 is connected by gearing wlth longitudinal shafts 56arranged in parallelism and equipped with drums 5'(, des1gned andadapted to take up cables 58 in whlch logs may be suspended as indicatedin Figure 3. Manifestly after the shaft 531s clutched to the shaft 51for the-utilization of power in lifting the logsin the cables 58 clearof the ground, the brake band 55 may be applied in order to hold thecables 58 and maintain the logs carried by the said cables 58 inraisedposition.

For the steering of the truck I provide the means best. shown in Figures1 and 2. The said means comprises an upright shaft 60 equipped with ahand wheel 61 and a.

miter gear 62, and a shaft 63 carried slightly below the main frame andhavlng a gear 64 intermeshed with the said gear 62. At

', its inner and rear end the shaft 63 is universally connected to ashaft 65 on the rear end of which is a miter gear 66. The said mitergear 66 is interposed between and con-- nected to miter gears 67 and 68on shafts 69 and 70, respectively. The shaft 69 is provided with a righthand thread on its outer portion and a shaft 7 O is provided with a lefthand thread on its outer portion. The said threaded portion of theshafts 69 and .70 are disposed in nuts 80 on slidable blocks 81 movablein guides 82 on the main frame. The said slidable blocks 81 arepivotally connected at 83 to arms 84 slidably arranged in the brackets32 as best shown in Figures 1 and 5. In virtue of this construction itwill be apparent that turning of the hand shaft 60 will be attended byswinging of all of the four brackets 32 in a common direction. Thus thetruck may-be readily guided toward the right or toward the left,

according to the direction in which the hand shaft 60 is turned, by themovement of all of the ground wheels 5. From this it follows that thetruck may be handled with claim and desire to secure by Letters-Patent,

Leeacee great facility and may be quickly turned in a ace of small area.

tween lugs thereof and the said abutments of the rods, spindles carriedby the rods,

ground wheels mounted on, said spindles, means,connecting the bodyarches, shafts carried by said upright rods and movable therewith, anddriving connections between the said shafts and the fround wheels;

body arches having 2. The combination 0 lugs, upright rods movable insaid lugs and provided with abutments, springs to sup- 4 port the saidbody arches interposed between lugs thereof and the said abutments ofthe rods, spindles carried b the rods, ground wheels mounted on saidspindles, means connecting the body arches, shafts carried by saidupright rods andmovable therewith, and driving connections" between thesaid shafts and the ground wheels; the said.

springs each comprising two coiled-spring units, anti-friction meansbetween the adj acent ends of the said units and about the adjacent rod,anti-friction means between one unit and the abutment on the rod, andantifriction means between the other unit and the body arch.

3. The combination of body arches-having lugs, upright rods movable insaid lugs and provided with abutments, springs to support the said bodyarches interposed between lu s thereof and the said abutments of the ros, spindles carried by the rods, ground wheels mounted on said spindles,means connecting the body arches, shafts carried by said upright rodsand movable therewitl1, and drivingconnections between the said shaftsand the ground Wheels, with brackets fixed on the rods and containingthe said shafts, and means for swinging the brackets and turning therods about their axes for steering purposes. 1

4. The combination of body arches havin lugs, upright rods-movable insaid lugs an provided with abutments, springs to support the said bodyarches interposed between lu thereof and the said abutments'of the ro s,spindles carried by the rods, ground wheels mounted on said spindles,means connecting the body arches, shafts carried by said upright rodsand movable therewith, and driving connections between the said shaftsand the ground wheels, with brackets vfixed'on the rods and containingthe said shafts, and means for swinging the brackets and turning therods about their axes for steering purposes; the said means includingtransversely movable blocks, manual means to simultaneousl move saidblocks in opposite directions, an arms interposed between and connectingthe blocks and the brackets.

5. The combination of body arches having lugs, upright rods movable insaid lugs and provided with abutments, springs to support the said bodyarches interposed between lugs thereof and the said abutments of therods, spindles carried by the rods, ground wheels mounted on saidspindles, means connecting the'body arches, shafts carried by saidupright rods and movable therewith, and driving connections between thesaid shafts and the ground wheels, with brackets fixed on the rods andcontaining the-said shafts, and means for swinging the brackets andturning the rods about their axes for steering purposes; the saidmeanscomprising transversely movable blocks having right and] left handnuts, right and left hand threaded shafts engaging said nuts and havingmiter gears at'their inner ends, a shaft having a miter gear interposedbetween in connection with the first-named miter gear, and a hand shaftconnected with the last-named shaft.

In testimony whereof I afix my signature.

1 JOHN MGLTY.

